3a + a - 15 = 225 . your substituting b(a-15) into the first equation. <span />
Answer:
37.6
Step-by-step explanation:
Multiply the numbers
Sin74 = Cos16
cause 16 + 74 = 90
Whenever the sum of two angles is equal with 90, the Sin of one is equal with the Cos of the other like :
Sin(30) = Cos(60)
and also
Tan(30) = Cot(60)
Depends. what are the numbers for both triangles?
A) -15 > -5 is false.
B) -4 > 0 is 0 < -4
C) -12 < -3 is always true. There are many solutions.
D) 2 < -5 is false.
Answer: C) -12 < -3
